Electric control device for dredging coal bunker

Abstract

The utility model discloses a coal bunker dredging electric control device, which relates to the technical field of coal bunker dredging, and comprises an air inlet ball valve, an air inlet connecting piece, an air storage tank, a base and a motor, the air storage tank and the motor are respectively and fixedly arranged on the base, a sounder is communicated between the motor and the air storage tank, the sounder is communicated with a taper pipe, and the taper pipe is communicated with the air inlet ball valve. A Helmholtz resonant cavity is formed in the end, away from the sounder, of the taper pipe and communicates with the coal bunker. The sound generator is driven by the motor to generate sound waves with specific frequency, the sound waves act on blockages in the coal bunker through the taper pipe and the Helmholtz resonant cavity, the blockages are loosened and fall off by utilizing the vibration energy of the sound waves, and compared with a mechanical dredging means, the large-area arching problem can be solved, and the dredging effect is more remarkable.

Description

Technical Field

[0001] This utility model relates to the field of coal bunker dredging technology, and in particular to an electrical control device for coal bunker dredging. Background Technology

[0002] In the field of coal bunker unblocking, existing technologies have many drawbacks. Mechanical unblocking methods, such as vibrating motors and rotating arch-breaking arms, are prone to wear and tear on the bunker walls, have a high risk of mechanical failure (failure rate exceeding 15%), and are limited to localized areas, making them unsuitable for large-area arching problems. Pneumatic unblocking methods (high-pressure air cannons) consume 2-5 kWh of energy per operation, generate noise levels exceeding 120 dB, and require frequent maintenance, with diaphragms needing replacement on average every 3 months.

[0003] In view of the shortcomings of these existing technologies, there is an urgent need to develop more efficient, safe and reliable coal bunker dredging technology, and the coal bunker dredging electrical control device of this utility model has come into being. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coal bunker unblocking electrical control device, comprising an air inlet valve, an air inlet connector, an air storage tank, a base, and a motor. The air storage tank and the motor are respectively fixedly installed on the base. A sound generator is connected between the motor and the air storage tank. A conical tube is connected to the sound generator. A Helmholtz resonant cavity is provided at the end of the conical tube away from the sound generator. The Helmholtz resonant cavity is connected to the coal bunker.

[0005] The Helmholtz resonant cavity is a cone-shaped structure with a gradually increasing diameter.

[0006] A pressure gauge is installed at the top of the gas storage tank.

[0007] An air inlet connector is provided on one side of the upper end of the gas storage tank, and an air inlet valve is provided on the end of the air inlet connector away from the gas storage tank.

[0008] A ball valve connector is connected to one side of the sound generator. An outlet ball valve is provided on the ball valve connector. A cone tube connector is provided on the outlet ball valve. The end of the cone tube connector away from the outlet ball valve is fixedly connected to the cone tube.

[0009] Beneficial Effects: Compared with existing technologies, this invention uses an electric motor to drive a sound generator, producing sound waves of a specific frequency. These waves, transmitted through a conical tube and a Helmholtz resonant cavity, act on the blockages within the coal bunker. The vibrational energy of the sound waves loosens and dislodges the blockages. Compared to mechanical unblocking methods, this invention can effectively address large-area arching issues, achieving a more significant unblocking effect. Compared to pneumatic unblocking methods, this device does not use high-pressure air, avoiding the safety hazards associated with high-pressure gases, such as explosions and gas leaks. Furthermore, the device's mechanical structure is relatively simple, lacking components prone to wear on the bunker walls, reducing the safety risks caused by mechanical failures and improving the safety and reliability of coal bunker unblocking operations. Since the device primarily relies on an electric motor to drive the sound generator, its energy consumption is relatively low, unlike the high-pressure air cannons used in pneumatic unblocking methods which consume 2-5 kWh per use. Moreover, the noise generated during operation is far below 120dB, reducing noise pollution to the working environment and improving working conditions. Compared with existing mechanical unblocking methods and pneumatic blockage breaking methods, this device has no complex mechanical moving parts, is not prone to wear and failure, does not require frequent maintenance, and does not require diaphragm replacement every 3 months like a high-pressure air cannon, thus reducing maintenance costs and workload. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] In the attached diagram: 1-Inlet balloon valve, 2-Inlet connector, 3-Pressure gauge, 4-Air tank, 5-Base, 6-Cone tube, 7-Helmholtz resonant cavity, 8-Cone tube connector, 9-Outlet balloon valve, 10-Ball valve connector, 11-Motor, 12-Sound generator. Detailed Implementation

[0012] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0013] Example

[0014] Please refer to the accompanying drawings in the specification. In this embodiment of the utility model, the coal bunker unblocking electrical control device includes an air inlet valve 1, an air inlet connector 2, an air storage tank 4, a base 5, and a motor 11. The air storage tank 4 and the motor 11 are respectively fixedly installed on the base 5. A sound generator 12 is connected between the motor 11 and the air storage tank 4. A conical tube 6 is connected to the sound generator 12. A Helmholtz resonant cavity 7 is provided at the end of the conical tube 6 away from the sound generator 12. The Helmholtz resonant cavity 7 is connected to the coal bunker.

[0015] The main function of gas storage tank 4 mentioned above is to stabilize gas pressure;

[0016] The Helmholtz resonant cavity 7 is a cone-shaped structure with a gradually increasing diameter.

[0017] A pressure gauge 3 is installed at the top of the gas storage tank 4.

[0018] An air inlet connector 2 is provided on one side of the upper end of the gas storage tank 4, and an air inlet valve 1 is provided on the end of the air inlet connector 2 away from the gas storage tank 4.

[0019] A ball valve connector 10 is connected to one side of the sound generator 12. A ball valve 9 is provided on the ball valve connector 10. A tapered tube connector 8 is provided on the ball valve 9. The end of the tapered tube connector 8 away from the ball valve 9 is fixedly connected to the tapered tube 6.

[0020] Working principle: First, turn on the motor and the air outlet valve. The motor is connected to the sound generator, and turning it on will start the sound generator to run. The air outlet valve is also connected to the sound generator. When the valve is open, the sound generated by the sound generator can be transmitted towards the coal bunker. If the valve is closed, the sound cannot be transmitted to the coal bunker.

[0021] Wait 10 seconds for the sound generator to stabilize before opening the inlet valve. At this point, pressurized gas enters the storage tank, passing sequentially through the sound generator, the cone tube, and the Helmholtz resonant cavity before finally reaching the coal bunker. During its flow, the pressurized gas, combined with the sound waves generated by the sound generator, works together to clear any blockages in the coal bunker.

[0022] Once the coal bunker unblocking work is completed, the shutdown procedure is as follows:

[0023] First, close the inlet valve. This is to prevent any residual pressurized gas inside the device and avoid potential safety hazards caused by pressurized gas.

[0024] Wait 10 seconds to ensure the pressure inside the device stabilizes, then turn off the sound generator and the balloon valve in sequence to complete the shutdown process.

[0025] In the aforementioned process, this invention uses an electric motor to drive a sound generator, producing sound waves of a specific frequency. These waves, transmitted through a conical tube and a Helmholtz resonant cavity, act on the blockages within the coal bunker. The vibrational energy of the sound waves loosens and dislodges the blockages. Compared to mechanical unblocking methods, this invention can effectively address large-area arching issues, achieving a more significant unblocking effect. Compared to pneumatic unblocking methods, this device does not use high-pressure air, avoiding the safety hazards associated with high-pressure gas, such as explosions and gas leaks. Furthermore, the device's mechanical structure is relatively simple, lacking components prone to wear on the bunker walls, reducing the safety risks caused by mechanical failures and improving the safety and reliability of coal bunker unblocking operations. Since the device primarily relies on an electric motor to drive the sound generator, its energy consumption is relatively low, unlike the high-pressure air cannons used in pneumatic unblocking methods, which consume 2-5 kWh per use. Moreover, the noise generated during operation is far below 120dB, reducing noise pollution to the working environment and improving working conditions. Compared with existing mechanical unblocking methods and pneumatic blockage breaking methods, this device has no complex mechanical moving parts, is not prone to wear and failure, does not require frequent maintenance, and does not require diaphragm replacement every 3 months like a high-pressure air cannon, thus reducing maintenance costs and workload.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

[0027] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A coal bunker unblocking electrical control device, characterized in that: The device includes an air inlet valve (1), an air inlet connector (2), an air storage tank (4), a base (5), and an electric motor (11). The air storage tank (4) and the electric motor (11) are respectively fixedly installed on the base (5). A sound generator (12) is connected between the electric motor (11) and the air storage tank (4). A cone tube (6) is connected to the sound generator (12). A Helmholtz resonant cavity (7) is provided at one end of the cone tube (6) away from the sound generator (12). The Helmholtz resonant cavity (7) is connected to the coal bunker.

2. The coal bunker unblocking electrical control device according to claim 1, characterized in that: The Helmholtz resonant cavity (7) is a cone-shaped structure with a gradually increasing diameter.

3. The coal bunker unblocking electrical control device according to claim 1, characterized in that: A pressure gauge (3) is installed at the top of the gas storage tank (4).

4. The coal bunker unblocking electrical control device according to claim 1, characterized in that: An air inlet connector (2) is provided on one side of the upper end of the gas storage tank (4), and an air inlet valve (1) is provided on the end of the air inlet connector (2) away from the gas storage tank (4).

5. The coal bunker unblocking electrical control device according to claim 1, characterized in that: A ball valve connector (10) is connected to one side of the sound generator (12), and an outlet ball valve (9) is provided on the ball valve connector (10). A cone tube connector (8) is provided on the outlet ball valve (9), and the end of the cone tube connector (8) away from the outlet ball valve (9) is fixedly connected to the cone tube (6).

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